Engine - Beta RR 250 Owner's Manual

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ENGINE

Type ................................................. Single-cylinder, 2-stroke, liquid cooled
Bore x stroke RR 250 ........................................................... 66,4 x 72 mm
Bore x stroke RR 300 .............................................................. 72 x 72 mm
Displacement (cm
Displacement (cm
Compression ratio RR 250 .............................................................. 12,8:1
Compression ratio RR 300 ................................................................. 12:1
Fuel system ............................................................carburetor without mixer
Carburetor
* - Such modifi cation makes the vehicle non-compliant with the road regulations in force. Its use must be limited to the
sole private circuits which are closed to circulation.
GB
3 ) RR 250 ...........................................................249 cm
) RR 300 ........................................................293,1 cm
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Version
Carburetor type
Main jet
Slow jet
Start jet
Needle
Needle position (from top)
Air screw turns (from all closed) 1 + 3/4
Striker
RR 250 RR 300
Certif. Competition* Certif. Competition*
PWK 36S AG PWK 36S AG
118 165 118
35 35 38
50
85 50
N84K N0ZK N84K
3°+1/2 2° 4°
1+1/4 2
YES NO YES
22
and electric start
165
35
85
N2ZJ
3°
1+1/4
NO
3
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